Dogs have long been man's best friends. Even before they were pampered pets, they served practical purposes, protecting family homes and farms, herding livestock, aiding in hunts—and serving on the battlefield. In In the Line of Fire, author Ace Collins reverently recounts the stories of thirteen noble canines throughout history, from Sallie, a courageous English bull terrier that served in the Civil War with the 11th Pennsylvania Regiment, to Lucca, a German Shepherd/Belgian Malinois mix that sniffed out IEDs in the Middle East. The tales are heartwarming, heartbreaking, bittersweet, and inspiring—a true testament to the loyalty, determination, and devotion of "man's best hero."